Modernize for current Go toolchains

The library already compiled and passed tests, but tooling and dependencies were stale. This brings everything up to current standards without changing public behavior. Library (go 1.23.0): - cmux_test.go: fix 8 `go vet` failures by sending writer-goroutine errors to the existing errCh (now buffered) instead of t.Fatal; ioutil.ReadAll -> io.ReadAll - matchers.go: io/ioutil -> io (io.Discard); gofmt -s doc comment - go.mod: go 1.11 -> 1.23.0; golang.org/x/net -> v0.42.0 (newest release that still permits a 1.23 directive) Example submodule: - golang.org/x/net/context -> stdlib context - grpc v1.27.0 -> v1.80, modern protobuf; helloworld now comes from the separate google.golang.org/grpc/examples module (requires go 1.25, isolated to this demo-only module) CI: - remove ancient .travis.yml (Go 1.6-1.8) - add .github/workflows/ci.yml: gofmt/vet/build/test -race for the library (Go 1.23 + 1.24 matrix) and the example Temporary() methods and TLS version defaults are intentionally unchanged: net.Error still requires Temporary(), and the TLS defaults are public-API behavior. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-08-29 14:54:30 +08:00 · 2026-06-07 23:38:42 -04:00
9 changed files with 138 additions and 153 deletions
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,50 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  library:
+    name: library (go ${{ matrix.go }})
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: ["1.23", "1.24"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: ${{ matrix.go }}
+      - name: gofmt
+        run: test -z "$(gofmt -s -l .)" || (gofmt -s -l . && exit 1)
+      - name: vet
+        run: go vet ./...
+      - name: build
+        run: go build ./...
+      - name: test
+        run: go test -race ./...
+
+  example:
+    name: example
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: example
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.25"
+      - name: gofmt
+        run: test -z "$(gofmt -s -l .)" || (gofmt -s -l . && exit 1)
+      - name: vet
+        run: go vet ./...
+      - name: build
+        run: go build ./...
+      - name: test
+        run: go test -race ./...
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,29 +0,0 @@
-language: go
-
-go:
-  - 1.6
-  - 1.7
-  - 1.8
-  - tip
-
-matrix:
-  allow_failures:
-    - go: tip
-
-gobuild_args: -race
-
-before_install:
-  - if [[ $TRAVIS_GO_VERSION == 1.6* ]]; then go get -u github.com/kisielk/errcheck; fi
-  - if [[ $TRAVIS_GO_VERSION == 1.6* ]]; then go get -u golang.org/x/lint/golint; fi
-
-before_script:
-  - '! gofmt -s -l . | read'
-  - echo $TRAVIS_GO_VERSION
-  - if [[ $TRAVIS_GO_VERSION == 1.6* ]]; then golint ./...; fi
-  - if [[ $TRAVIS_GO_VERSION == 1.6* ]]; then errcheck ./...; fi
-  - if [[ $TRAVIS_GO_VERSION == 1.6* ]]; then go tool vet .; fi
-  - if [[ $TRAVIS_GO_VERSION == 1.6* ]]; then go tool vet --shadow .; fi
-
-script:
-  - go test -bench . -v ./...
-  - go test -race -bench . -v ./...
--- a/cmux_test.go
+++ b/cmux_test.go
@@ -22,7 +22,6 @@ import (
 	"fmt"
 	"go/build"
 	"io"
-	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
@@ -194,7 +193,7 @@ func runTestHTTPClient(t *testing.T, proto string, addr net.Addr) {
 		}
 	}()

-	b, err := ioutil.ReadAll(r.Body)
+	b, err := io.ReadAll(r.Body)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -321,7 +320,7 @@ func TestTimeout(t *testing.T) {

 func TestRead(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -335,10 +334,11 @@ func TestRead(t *testing.T) {
 	writer, reader := net.Pipe()
 	go func() {
 		if _, err := io.WriteString(writer, strings.Repeat(payload, mult)); err != nil {
-			t.Fatal(err)
+			errCh <- err
+			return
 		}
 		if err := writer.Close(); err != nil {
-			t.Fatal(err)
+			errCh <- err
 		}
 	}()

@@ -379,7 +379,7 @@ func TestRead(t *testing.T) {

 func TestAny(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -403,7 +403,7 @@ func TestTLS(t *testing.T) {
 	generateTLSCert(t)
 	defer cleanupTLSCert(t)
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -428,7 +428,7 @@ func TestTLS(t *testing.T) {

 func TestHTTP2(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -439,10 +439,11 @@ func TestHTTP2(t *testing.T) {
 	writer, reader := net.Pipe()
 	go func() {
 		if _, err := io.WriteString(writer, http2.ClientPreface); err != nil {
-			t.Fatal(err)
+			errCh <- err
+			return
 		}
 		if err := writer.Close(); err != nil {
-			t.Fatal(err)
+			errCh <- err
 		}
 	}()

@@ -493,7 +494,7 @@ func testHTTP2MatchHeaderField(
 	notMatchValue string,
 ) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -505,12 +506,14 @@ func testHTTP2MatchHeaderField(
 	writer, reader := net.Pipe()
 	go func() {
 		if _, err := io.WriteString(writer, http2.ClientPreface); err != nil {
-			t.Fatal(err)
+			errCh <- err
+			return
 		}
 		var buf bytes.Buffer
 		enc := hpack.NewEncoder(&buf)
 		if err := enc.WriteField(hpack.HeaderField{Name: name, Value: headerValue}); err != nil {
-			t.Fatal(err)
+			errCh <- err
+			return
 		}
 		framer := http2.NewFramer(writer, nil)
 		err := framer.WriteHeaders(http2.HeadersFrameParam{
@@ -520,10 +523,11 @@ func testHTTP2MatchHeaderField(
 			EndHeaders:    true,
 		})
 		if err != nil {
-			t.Fatal(err)
+			errCh <- err
+			return
 		}
 		if err := writer.Close(); err != nil {
-			t.Fatal(err)
+			errCh <- err
 		}
 	}()

@@ -558,7 +562,7 @@ func testHTTP2MatchHeaderField(

 func TestHTTPGoRPC(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -583,7 +587,7 @@ func TestHTTPGoRPC(t *testing.T) {

 func TestErrorHandler(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -624,7 +628,7 @@ func TestErrorHandler(t *testing.T) {

 func TestMultipleMatchers(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -653,7 +657,7 @@ func TestMultipleMatchers(t *testing.T) {

 func TestListenerClose(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
@@ -698,7 +702,7 @@ func TestListenerClose(t *testing.T) {

 func TestClose(t *testing.T) {
 	defer leakCheck(t)()
-	errCh := make(chan error)
+	errCh := make(chan error, 1)
 	defer func() {
 		select {
 		case err := <-errCh:
--- a/example/example_test.go
+++ b/example/example_test.go
@@ -15,6 +15,7 @@
 package cmux_test

 import (
+	"context"
 	"fmt"
 	"io"
 	"log"
@@ -25,7 +26,6 @@ import (

 	"google.golang.org/grpc"

-	"golang.org/x/net/context"
 	"golang.org/x/net/websocket"

 	"github.com/soheilhy/cmux"
--- a/example/go.mod
+++ b/example/go.mod
@@ -1,13 +1,19 @@
 module github.com/soheilhy/cmux/example

-go 1.11
+go 1.25.0

 require (
-	github.com/golang/protobuf v1.4.3 // indirect
 	github.com/soheilhy/cmux v0.0.0-00010101000000-000000000000
-	golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb
-	google.golang.org/genproto v0.0.0-20201207150747-9ee31aac76e7 // indirect
-	google.golang.org/grpc v1.27.0
+	golang.org/x/net v0.53.0
+	google.golang.org/grpc v1.80.0
+	google.golang.org/grpc/examples v0.0.0-20260605180800-0f3086db7a75
+)
+
+require (
+	golang.org/x/sys v0.43.0 // indirect
+	golang.org/x/text v0.36.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260414002931-afd174a4e478 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 )

 replace github.com/soheilhy/cmux => ../
--- a/example/go.sum
+++ b/example/go.sum
@@ -1,80 +1,40 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
-github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
-github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
-github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
-github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
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-github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
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-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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-golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
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-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20201207150747-9ee31aac76e7 h1:MrlntRhz7JNWmR2J5pRYZFgfR0IuuhELDhxo2aBZVsg=
-google.golang.org/genproto v0.0.0-20201207150747-9ee31aac76e7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
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-google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
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-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
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+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
+github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
+github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
+go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
+go.opentelemetry.io/otel v1.43.0 h1:mYIM03dnh5zfN7HautFE4ieIig9amkNANT+xcVxAj9I=
+go.opentelemetry.io/otel v1.43.0/go.mod h1:JuG+u74mvjvcm8vj8pI5XiHy1zDeoCS2LB1spIq7Ay0=
+go.opentelemetry.io/otel/metric v1.43.0 h1:d7638QeInOnuwOONPp4JAOGfbCEpYb+K6DVWvdxGzgM=
+go.opentelemetry.io/otel/metric v1.43.0/go.mod h1:RDnPtIxvqlgO8GRW18W6Z/4P462ldprJtfxHxyKd2PY=
+go.opentelemetry.io/otel/sdk v1.43.0 h1:pi5mE86i5rTeLXqoF/hhiBtUNcrAGHLKQdhg4h4V9Dg=
+go.opentelemetry.io/otel/sdk v1.43.0/go.mod h1:P+IkVU3iWukmiit/Yf9AWvpyRDlUeBaRg6Y+C58QHzg=
+go.opentelemetry.io/otel/sdk/metric v1.43.0 h1:S88dyqXjJkuBNLeMcVPRFXpRw2fuwdvfCGLEo89fDkw=
+go.opentelemetry.io/otel/sdk/metric v1.43.0/go.mod h1:C/RJtwSEJ5hzTiUz5pXF1kILHStzb9zFlIEe85bhj6A=
+go.opentelemetry.io/otel/trace v1.43.0 h1:BkNrHpup+4k4w+ZZ86CZoHHEkohws8AY+WTX09nk+3A=
+go.opentelemetry.io/otel/trace v1.43.0/go.mod h1:/QJhyVBUUswCphDVxq+8mld+AvhXZLhe+8WVFxiFff0=
+golang.org/x/net v0.53.0 h1:d+qAbo5L0orcWAr0a9JweQpjXF19LMXJE8Ey7hwOdUA=
+golang.org/x/net v0.53.0/go.mod h1:JvMuJH7rrdiCfbeHoo3fCQU24Lf5JJwT9W3sJFulfgs=
+golang.org/x/sys v0.43.0 h1:Rlag2XtaFTxp19wS8MXlJwTvoh8ArU6ezoyFsMyCTNI=
+golang.org/x/sys v0.43.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/text v0.36.0 h1:JfKh3XmcRPqZPKevfXVpI1wXPTqbkE5f7JA92a55Yxg=
+golang.org/x/text v0.36.0/go.mod h1:NIdBknypM8iqVmPiuco0Dh6P5Jcdk8lJL0CUebqK164=
+gonum.org/v1/gonum v0.17.0 h1:VbpOemQlsSMrYmn7T2OUvQ4dqxQXU+ouZFQsZOx50z4=
+gonum.org/v1/gonum v0.17.0/go.mod h1:El3tOrEuMpv2UdMrbNlKEh9vd86bmQ6vqIcDwxEOc1E=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260414002931-afd174a4e478 h1:RmoJA1ujG+/lRGNfUnOMfhCy5EipVMyvUE+KNbPbTlw=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260414002931-afd174a4e478/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
+google.golang.org/grpc v1.80.0 h1:Xr6m2WmWZLETvUNvIUmeD5OAagMw3FiKmMlTdViWsHM=
+google.golang.org/grpc v1.80.0/go.mod h1:ho/dLnxwi3EDJA4Zghp7k2Ec1+c2jqup0bFkw07bwF4=
+google.golang.org/grpc/examples v0.0.0-20260605180800-0f3086db7a75 h1:AEIy9rWQCaqGLD5thytE2ox41wjT4vOe43/yh2enp+A=
+google.golang.org/grpc/examples v0.0.0-20260605180800-0f3086db7a75/go.mod h1:Cj6Qdy58KTzw400M0aa1PA3rNLrhQgPFdqXxShtOXmM=
+google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
+google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,7 @@
 module github.com/soheilhy/cmux

-go 1.11
+go 1.23.0

-require golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb
+require golang.org/x/net v0.42.0
+
+require golang.org/x/text v0.27.0 // indirect
--- a/go.sum
+++ b/go.sum
@@ -1,12 +1,4 @@
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb h1:eBmm0M9fYhWpKZLjQUUKka/LtIxf46G4fxeEz5KJr9U=
-golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/net v0.42.0 h1:jzkYrhi3YQWD6MLBJcsklgQsoAcw89EcZbJw8Z614hs=
+golang.org/x/net v0.42.0/go.mod h1:FF1RA5d3u7nAYA4z2TkclSCKh68eSXtiFwcWQpPXdt8=
+golang.org/x/text v0.27.0 h1:4fGWRpyh641NLlecmyl4LOe6yDdfaYNrGb2zdfo4JV4=
+golang.org/x/text v0.27.0/go.mod h1:1D28KMCvyooCX9hBiosv5Tz/+YLxj0j7XhWjpSUF7CU=
--- a/matchers.go
+++ b/matchers.go
@@ -18,7 +18,6 @@ import (
 	"bufio"
 	"crypto/tls"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"strings"

@@ -67,7 +66,8 @@ func HTTP1Fast(extMethods ...string) Matcher {
 //
 // By default, any TLS handshake packet is matched. An optional whitelist
 // of versions can be passed in to restrict the matcher, for example:
-//  TLS(tls.VersionTLS11, tls.VersionTLS12)
+//
+//	TLS(tls.VersionTLS11, tls.VersionTLS12)
 func TLS(versions ...int) Matcher {
 	if len(versions) == 0 {
 		versions = []int{
@@ -148,7 +148,7 @@ func HTTP1HeaderFieldPrefix(name, valuePrefix string) Matcher {
 // headers frame.
 func HTTP2HeaderField(name, value string) Matcher {
 	return func(r io.Reader) bool {
-		return matchHTTP2Field(ioutil.Discard, r, name, func(gotValue string) bool {
+		return matchHTTP2Field(io.Discard, r, name, func(gotValue string) bool {
 			return gotValue == value
 		})
 	}
@@ -159,7 +159,7 @@ func HTTP2HeaderField(name, value string) Matcher {
 // valuePrefix, this will match.
 func HTTP2HeaderFieldPrefix(name, valuePrefix string) Matcher {
 	return func(r io.Reader) bool {
-		return matchHTTP2Field(ioutil.Discard, r, name, func(gotValue string) bool {
+		return matchHTTP2Field(io.Discard, r, name, func(gotValue string) bool {
 			return strings.HasPrefix(gotValue, valuePrefix)
 		})
 	}